Environmental Assessment Program

Freshwater Monitoring

Rivers and Streams

Rivers and streams are important biological, commercial, and recreational resources.  They provide habitat for fish and wildlife, drinking water, and are important for transportation as well as recreation such as fishing and kayaking.  Washington streams face challenges from toxics and bacteria from stormwater run-off and degradation from logging, development, climate change, and other sources.  Monitoring rivers and streams is crucial for protecting habitat of salmon and other species and ensuring water and food security.

River and Stream Water Quality Monitoring

River and Stream Flows 

Stream Biological Monitoring

Intensively Monitored Watersheds for Salmon Restoration

Stream Temperature Assessments

Forest Practices Effectiveness Monitoring

Water Quality Improvement Projects (TMDL) monitoring

Watershed Health Monitoring

Aquatic Plant and Lakes

Clean lakes are important to everyone who boats, swims, fishes, or simply enjoys the beauty of lakes.  Lakes face many threats ranging from development of stormwater runoff to invasive species.  Ecology monitored lakes for water quality from 1989 to 1999, but funding for the work was discontinued in 2000.  The Environmental Assessment Program has been monitoring aquatic plant communities since 1991.

Aquatic Plant Monitoring

Lake Water Quality